Hi Nuria, I do not think that you need to do anything different as long as it is not going to lean outside more than shown on the picture. Make sure that you insert the support in the base tier and add a cardboard separator under the top tier. The cardboard had to rest on the dowels so that the top tier does not crash the base one. You could also use a dummy for the top tier which would be lighter and will definitely not collapse, as long as you have enough cake in the other elements of the cake!!!
Marlene - CakeHeaven
